Karat's comments come in the wake of Prachanda's demand for scrapping the 1950 India-Nepal Peace and Friendship Treaty. Prachanda, who is a frontrunner for the Prime Minister's post in Nepal has upped the ante and demanded the scrapping of the nearly six decade old treaty, casting a shadow over the historical ties between India and Nepal.
Prachanda had earlier told reporters that several other treaties with India also needed to be revisited and reviewed, but added that he was all for a positive and constructive relationship with New Delhi.
Nepal's former Maoists rebels won 220 seats in a 601-member special Assembly, making them the single largest party.
The Maoists have won the general election after having been in the political wilderness for a decade between 1996 and 2006.
The election crowns a 2006 peace deal that ended the ten-year-long Maoist insurgency that killed some 13,000 people in one of the world's poorest countries.